The bears distribution area includes Eurasia, North and South America, Asia, some islands of Japan, Northwest Africa and the Arctic expanses. Bears live in the forest. In addition to polar bears, all members of this family lead a sedentary lifestyle. They can keep families (a bear with cubs), but usually prefer solitude. Each individual has its own territory, on which the bear lives, hunts and hibernates. In places with surplus food, there may be several bears at the same time. Animals living in cold regions fall into a seasonal hibernation, lasting up to 200 days.
Bears are territorial animals. Each individual owns a large enough area, controls, which hunts and hibernates. Up to two years old females live together with cubs. Bears are avid loners, but in rich food places, for example, on a berry meadow, several individuals can meet at once. Having satiated, they disperse. But the bear invaded someone else’s territory, waiting for a meeting with the owner, which may result in a collision. The search for food takes a long time, so bears are active day and night. Sleeping bears in disguised shelters – lairs, which are in the deepenings under the roots of trees. A white-chested bear arranges a nest on a tree. Bears of the Ursus genus, living in cold climatic zones, hibernate in winter. Winter sleep lasts from 78 to 200 days. The exact time depends on the area. At the time of hibernation, bears arrange a lair among the windbreak, under the roots of trees or dig it on the slopes of mountains and hills. They lining and warming the lairs with grass, leaves and moss. Bears fall into a long hibernation in order to survive a hungry winter period.